pushbutton vs later wire harnesses

See link below for one I have for sale and maybe it will give you a better idea if its possible. to transfer wiring from 64 to 65-66.
Don't know if you can rewire a manual harness.
Below is a link to an auto trans. push button wiring & assembly with cable removed from a 64 Barracuda.
[FOR SALE] - 1964 Barracuda Valiant Under Dash Wiring Harness & Trans Push Button Assembly & Trans. Cable.
I also have the push button bezel, instrument cluster and engine wiring harness removed from a 64 Barracuda too.